[Elecraft] Advice on Additional Roofing Filters for K3

[Victor Rosenthal]

I have a 200 in mine, and I never need it. Period. The 400 plus DSP is 
all that I've ever needed for CW.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco


On 24/12/2025 18:43, Tom Bowles via Elecraft wrote:
> Hello all,
> 
> I recently acquired a K3 that came with the standard 2.7 kHz and a 500 Hz roofing filters installed (no subrx). I mostly operate CW, SSB, and sometimes RTTY contests, and I'd like to round out my filter set for better performance in crowded bands.
> 
> I'm considering adding a 1.8 kHz for SSB and a 250 Hz for CW, but I've read that the 250 Hz filter often measures wider in practice (around 330-350 Hz) and may not be as sharp as expected. Has anyone experienced this, and would you recommend it, or suggest alternatives like the 200 Hz or 400 Hz instead?
> 
> 73,
> Tom KE5CW
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